import { MaybeAsyncIterable } from "../types.js";

export interface EqualitySet<T> extends Iterable<T> {
  readonly size: number;
  add(value: T): boolean;
  addAll(values: Iterable<T>): number;
  contains(value: T): boolean;
  remove(value: T): boolean;
  clear(): void;
  values(): IterableIterator<T>;
}

export interface AsyncEqualitySet<T> extends Iterable<T> {
  readonly size: number;
  add(value: T): Promise<boolean>;
  addAll(values: MaybeAsyncIterable<T>): Promise<number>;
  contains(value: T): Promise<boolean>;
  remove(value: T): Promise<boolean>;
  clear(): void;
  values(): IterableIterator<T>;
}